<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form enctype="multipart/form-data" action="${pageContext.request.contextPath}/save_file" method="post">
        <input type="file" name="file">
        <input type="submit" value="提交">
    </form>
</body>
</html>